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Re: William T. Parry gets rid of Disjunction introduction

From dbush <dbush.mobile@gmail.com>
Newsgroups sci.logic, sci.math, comp.theory
Subject Re: William T. Parry gets rid of Disjunction introduction
Date 2026-06-27 21:42 -0400
Organization A noiseless patient Spider
Message-ID <111pu5i$3ak9b$4@dont-email.me> (permalink)
References (14 earlier) <111pnvn$39nhp$1@dont-email.me> <111ps6b$3ak9b$1@dont-email.me> <111pt3u$3ar31$1@dont-email.me> <111pte1$3ak9b$3@dont-email.me> <111pu2s$3b1ci$1@dont-email.me>

Cross-posted to 3 groups.

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On 6/27/2026 9:40 PM, olcott wrote:
> On 6/27/2026 8:29 PM, dbush wrote:
>> On 6/27/2026 9:24 PM, olcott wrote:
>>> On 6/27/2026 8:08 PM, dbush wrote:
>>>> On 6/27/2026 7:56 PM, olcott wrote:
>>>>> On 6/27/2026 6:30 PM, dbush wrote:
>>>>>> On 6/27/2026 7:22 PM, olcott wrote:
>>>>>>> On 6/27/2026 5:52 PM, dbush wrote:
>>>>>>>> On 6/27/2026 6:40 PM, olcott wrote:
>>>>>>>>> On 6/27/2026 1:34 PM, dbush wrote:
>>>>>>>>>> On 6/27/2026 2:29 PM, olcott wrote:
>>>>>>>>>>> On 6/27/2026 1:24 PM, dbush wrote:
>>>>>>>>>>>> On 6/27/2026 2:03 PM, olcott wrote:
>>>>>>>>>>>>> On 6/27/2026 12:54 PM, dbush wrote:
>>>>>>>>>>>>>> On 6/27/2026 11:11 AM, polcott wrote:
>>>>>>>>>>>>>>> On 6/27/2026 2:08 AM, Mikko wrote:
>>>>>>>>>>>>>>>> On 26/06/2026 15:49, olcott wrote:
>>>>>>>>>>>>>>>>> On 6/26/2026 1:49 AM, Mikko wrote:
>>>>>>>>>>>>>>>>>> On 26/06/2026 04:32, olcott wrote:
>>>>>>>>>>>>>>>>>>> William T. Parry, Entailment Logics
>>>>>>>>>>>>>>>>>>> gets rid of Disjunction introduction
>>>>>>>>>>>>>>>>>>> to prevent the principle of explosion
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> A simple logical matrix and sequent calculus for
>>>>>>>>>>>>>>>>>>> Parry’s logic of Analytic Implication
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> The main and distinctive feature of PAI (and of the many
>>>>>>>>>>>>>>>>>>> systems of analytic implication belonging to its ilk) is
>>>>>>>>>>>>>>>>>>> the rejection of the classically valid principle of 
>>>>>>>>>>>>>>>>>>> Addition,
>>>>>>>>>>>>>>>>>>> sometimes also referred to as Disjunction 
>>>>>>>>>>>>>>>>>>> Introduction. In
>>>>>>>>>>>>>>>>>>> other words, the principle leading from a formula ϕ to a
>>>>>>>>>>>>>>>>>>> disjunction of the form ϕ ∨ ψ, where ψ is an arbitrary
>>>>>>>>>>>>>>>>>>> formula. Parry blamed on this principle the derivability
>>>>>>>>>>>>>>>>>>> of the paradoxes of strict implication—given that it is
>>>>>>>>>>>>>>>>>>> famously featured in Lewis’ derivation of an arbitrary
>>>>>>>>>>>>>>>>>>> formula ψ from a contradiction of the form ϕ ∧ ¬ϕ.
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> https://philarchive.org/archive/SZMASL
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> He also gets rid of an efficient way to convince 
>>>>>>>>>>>>>>>>>> people who don't
>>>>>>>>>>>>>>>>>> understand much of logic.
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> As I recently showed in another post. I figured
>>>>>>>>>>>>>>>>> all this out on my own. I didn't even know that
>>>>>>>>>>>>>>>>> anyone else ever did this. I just knew that when
>>>>>>>>>>>>>>>>> trying to find out what is deduced from a set of
>>>>>>>>>>>>>>>>> premises that you cannot pop in another sentence
>>>>>>>>>>>>>>>>> from out of nowhere and get a correct conclusion.
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> By popping in another sentence from out of nowhere
>>>>>>>>>>>>>>>>> (as it shows above) the principle of explosion is
>>>>>>>>>>>>>>>>> derived.
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> The usual meaning of proof is a sequence of statement 
>>>>>>>>>>>>>>>> where eachstatement either is a premis or follows from 
>>>>>>>>>>>>>>>> one or more earlier
>>>>>>>>>>>>>>>> statements 
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Except with Disjunction introduction, that is its problem.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> So you're saying that in the following natural language 
>>>>>>>>>>>>>> statement:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> It is a key issue in that it creates the
>>>>>>>>>>>>> psychotic break from reality known as the
>>>>>>>>>>>>> Principle of Explosion, otherwise it may
>>>>>>>>>>>>> make no difference at all.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Stay on topic or I will block you.
>>>>>>>>>>>>
>>>>>>>>>>>> Explain in detail how the below which you dishonestly 
>>>>>>>>>>>> trimmed is off- topic.
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> The topic is how Disjunction introduction enables the
>>>>>>>>>>> Principle of Explosion.
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Rejected, as you not liking the result doesn't make it invalid.
>>>>>>>>>>
>>>>>>>>>> Through a series of truth preserving operations, when a 
>>>>>>>>>> contradiction is given as true, any statement can be proven as 
>>>>>>>>>> true.
>>>>>>>>>>
>>>>>>>>>> The principle of explosion is a demonstration of *why* a 
>>>>>>>>>> formal system whose axioms lead to a contradiction is useless.
>>>>>>>>>>
>>>>>>>>>> The only reason someone would want to get rid of the principle 
>>>>>>>>>> of explosion is to be able to use a system that has a 
>>>>>>>>>> contradiction.
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> My reason to get rid of the principle of explosion
>>>>>>>>> it to get rid of anything and everything that prevents
>>>>>>>>> infallibly correct reasoning.
>>>>>>>>>
>>>>>>>>
>>>>>>>> If you get rid of the principle of explosion, the law of non- 
>>>>>>>> contradiction goes away as it looses its basis.
>>>>>>>>
>>>>>>>
>>>>>>> You keep failing to pay close enough attention.
>>>>>>> I only get rid of the POE by getting rid of Disjunction 
>>>>>>> introduction.
>>>>>>
>>>>>> Which you can't do because it's a truth-preserving operation.
>>>>>>
>>>>> 1) P ∧ ¬P    // Premise
>>>>> 2) P          // Conjunction elimination
>>>>> 3) ¬P        // Conjunction elimination
>>>>> 4) P ∨ Q      // Disjunction introduction
>>>>> 5) Q          // Disjunctive syllogism
>>>>> https://en.wikipedia.org/wiki/Principle_of_explosion#Proof
>>>>>
>>>>> When you insert English meanings into the
>>>>> propositional variables it is as obvious
>>>>> as a pie in the fact the DI IS NOT TRUTH PRESERVING.
>>>>
>>>> So you're saying that in the following natural language statement:
>>>>
>>>> --------------------------------------
>>>> At least one of the following statements is true:
>>>> - Earth is the third planet from the sun.
>>>> - <X>
>>>> --------------------------------------
>>>>
>>>> Where <X> is any natural language statement, there exists a 
>>>> statement X such that the condition "At least one of the following 
>>>> statements is true" is false.
>>>>
>>>> Name it.
>>>>
>>>
>>> That is not Disjunction introduction combined with
>>> Disjunctive syllogism, it is bare Disjunction.
>>>
>>
>> Let me spell it out more explicitly then.
>>
>> Given that the following natural language statement is true:
>>
>> --------------------------------------
>> Earth is the third planet from the sun.
>> --------------------------------------
>>
>> In the following natural language statement:
>>
>> --------------------------------------
>> At least one of the following statements is true:
>> - Earth is the third planet from the sun.
>> - <X>
>> --------------------------------------
>>
>> Where <X> is any natural language statement, does there exist a 
>> statement X such that the condition "At least one of the following 
>> statements is true" is false?
>>
> 
> Where X is "What time is it?"
> 
> 

Is the statement "Earth is the third planet from the sun" true?

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William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-25 20:32 -0500
  Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-06-26 09:49 +0300
    Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-26 07:49 -0500
      Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-26 09:14 -0400
        Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-26 08:17 -0500
          Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-26 09:22 -0400
            Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-26 09:24 -0400
              Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-26 12:09 -0400
              Re: William T. Parry gets rid of Disjunction introduction Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-06-27 07:18 -0700
            Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-06-27 10:11 +0300
      Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-06-27 10:08 +0300
        Re: William T. Parry gets rid of Disjunction introduction polcott <polcott333@gmail.com> - 2026-06-27 10:11 -0500
          Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-27 13:54 -0400
            Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-27 13:03 -0500
              Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-27 14:24 -0400
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-27 13:29 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-27 14:34 -0400
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-27 18:30 -0400
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-27 17:40 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-27 18:52 -0400
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-27 18:22 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-27 19:30 -0400
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-27 18:56 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-27 21:08 -0400
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-27 20:24 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-27 21:29 -0400
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-27 20:40 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-27 21:42 -0400
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-27 20:49 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-27 21:53 -0400
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-27 22:02 -0400
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-27 22:23 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-27 23:34 -0400
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-06-28 12:23 +0300
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-28 23:56 -0400
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-28 23:13 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-29 08:08 -0400
                Re: William T. Parry gets rid of Disjunction introduction polcott <polcott333@gmail.com> - 2026-06-29 08:17 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-29 09:23 -0400
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-29 09:00 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-29 10:01 -0400
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-06-30 11:48 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-30 09:37 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-01 09:46 +0300
                Re: William T. Parry gets rid of Disjunction introduction Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-07-01 04:33 -0700
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-01 10:01 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-02 09:21 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-02 09:37 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-07-02 10:42 -0400
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-03 11:17 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-03 09:46 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-04 09:37 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 08:15 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-07-04 09:19 -0400
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-06 10:16 +0300
                Olcott gets rid of the Principle of Explosion olcott <polcott333@gmail.com> - 2026-07-06 08:56 -0500
                Re: Olcott gets rid of the Principle of Explosion dbush <dbush.mobile@gmail.com> - 2026-07-06 10:09 -0400
                Re: Olcott gets rid of the Principle of Explosion Mikko <mikko.levanto@iki.fi> - 2026-07-08 12:05 +0300
                Re: Olcott gets rid of the Principle of Explosion Mikko <mikko.levanto@iki.fi> - 2026-07-08 12:02 +0300
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-06 13:17 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 12:54 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-06 12:57 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 14:06 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-06 13:17 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 15:04 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-06 14:20 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 16:54 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-06 16:15 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 17:36 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-06 16:50 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 17:53 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-06 17:37 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 18:40 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-06 18:47 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 20:24 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-06 19:49 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 20:57 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-06 20:11 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 21:24 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-06 20:41 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 21:44 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-06 21:03 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 22:12 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-06 21:28 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 22:40 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-07 09:31 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-07 11:04 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-07 12:46 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-07 14:19 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-07 13:29 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-07 14:53 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-07 14:08 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-07 16:13 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-07 15:24 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-07 16:30 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-07 17:06 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-07 19:05 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-07 19:17 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-07 20:49 -0500
                Re: William T. Parry gets rid of Disjunction introduction "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-08 15:12 -0700
                Re: William T. Parry gets rid of Disjunction introduction Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-07-06 21:58 -0700
                Re: William T. Parry gets rid of Disjunction introduction Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-07-07 08:44 -0700
                Re: William T. Parry gets rid of Disjunction introduction Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-07-07 08:56 -0700
                Ross Finlayson what about the Prolog Liar Paradox ? olcott <polcott333@gmail.com> - 2026-07-07 11:10 -0500
                Re: Ross Finlayson what about the Prolog Liar Paradox ? Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-07-07 10:53 -0700
                Re: Ross Finlayson what about the Prolog Liar Paradox ? olcott <polcott333@gmail.com> - 2026-07-07 13:07 -0500
                Re: Ross Finlayson what about the Prolog Liar Paradox ? Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-07-07 12:17 -0700
                Re: Ross Finlayson what about the Prolog Liar Paradox ? olcott <polcott333@gmail.com> - 2026-07-07 14:48 -0500
                Re: Ross Finlayson what about the Prolog Liar Paradox ? Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-07-07 14:35 -0700
                Re: Ross Finlayson what about the Prolog Liar Paradox ? Alan Mackenzie <acm@muc.de> - 2026-07-07 21:57 +0000
                Re: Ross Finlayson what about the Prolog Liar Paradox ? Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-07-08 00:36 -0700
                Re: Ross Finlayson what about the Prolog Liar Paradox ? olcott <polcott333@gmail.com> - 2026-07-07 17:17 -0500
                Re: William T. Parry gets rid of Disjunction introduction Alan Mackenzie <acm@muc.de> - 2026-07-06 22:17 +0000
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 17:31 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-08 12:10 +0300
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-06-30 10:55 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-30 08:45 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-01 09:50 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-01 10:04 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-07-01 13:34 -0400
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-02 09:27 +0300
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-09 10:48 +0300
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-09 10:40 +0300
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-06-28 12:22 +0300
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-06-28 12:18 +0300
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-06-28 12:13 +0300
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-06-28 12:32 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-28 22:17 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-06-29 12:29 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-29 08:55 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-29 09:59 -0400
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-06-30 11:10 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-06-30 08:55 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-06-30 10:01 -0400
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-01 09:53 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-01 10:06 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-02 09:29 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-02 09:40 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-03 11:22 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-03 09:50 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-04 11:15 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 12:09 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-06 10:20 +0300
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-01 10:32 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-01 10:25 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-07-01 13:37 -0400
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-01 13:02 -0500
                Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-07-01 14:17 -0400
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-02 09:31 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-02 09:40 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-03 11:24 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-03 10:04 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-04 09:47 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 08:21 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-04 09:08 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 11:44 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-04 10:59 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 15:58 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-04 15:29 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 16:36 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-04 16:11 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 18:42 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-04 17:57 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 19:08 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-04 18:23 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 19:33 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-04 18:43 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 20:18 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-04 19:28 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 21:17 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-04 20:22 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 21:29 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-04 20:50 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 22:17 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-04 21:23 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 22:45 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-04 21:52 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 23:05 -0500
                Re: William T. Parry gets rid of Disjunction introduction André G. Isaak <agisaak@gm.invalid> - 2026-07-05 14:40 -0600
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-05 15:51 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-06 10:40 +0300
                Re: William T. Parry gets rid of Disjunction introduction Tristan Wibberley <tristan.wibberley+netnews2@alumni.manchester.ac.uk> - 2026-07-06 13:06 +0100
                Re: William T. Parry gets rid of Disjunction introduction Tristan Wibberley <tristan.wibberley+netnews2@alumni.manchester.ac.uk> - 2026-07-06 19:40 +0100
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-04 11:16 +0300
                Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-04 12:11 -0500
                Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-07-06 10:53 +0300
          Re: William T. Parry gets rid of Disjunction introduction Mikko <mikko.levanto@iki.fi> - 2026-06-28 12:04 +0300
  Re: William T. Parry gets rid of Disjunction introduction Tristan Wibberley <tristan.wibberley+netnews2@alumni.manchester.ac.uk> - 2026-07-06 12:49 +0100
    Re: William T. Parry gets rid of Disjunction introduction olcott <polcott333@gmail.com> - 2026-07-06 08:45 -0500
      Re: William T. Parry gets rid of Disjunction introduction dbush <dbush.mobile@gmail.com> - 2026-07-06 09:50 -0400

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